Gas-burner.



PATENTED AUG. 16, 1904.

" VF; w. RATHL GAS BURNER;

APPLICATION FILED DEO.15, 1903.

N0 MODEL.

Patented August 16,. 1904.

FRANK W. RATH, OF PATERSON, NEW JERSEY.

GAS-BURNER.

' SPECIFICATION formingpart of Letters Patent No. 767,958, dated August16, 1904.

Application filed December 15, 1903. Serial No. 185,236. (No model.)

To all whom it may concern} Be it known that I, FRANK W. RATH, a citizenof the United States, residing at Paterson, in the county of Passaic andState of New J ersey, have invented new and useful Improvements inGas-Burners, of which the following is a specification. I

This invention relates to burners, and has particular application-to acertain novel and improved gas-burner designed especially for use inconnection with incandescent lights.

In the present instance I have in view the provision of an improvedburner of the type referred to through the medium of which the flowv ofgas to the mixing f chamber of the burner may be regulated andcontrolled in such manner that with aminimum consumption of gas a lightof increased candle-power will be obtained when compared with theburnersnow generally in use.

Still a further object of my invention is to provide the gas-nozzle witha plurality of gaspassages in the nature of perforations or bores soconstructed and arranged that the gas may be admitted to themixing-chamber without the jets of gas issuing from the nozzle, formingwhat is commonly known as a crossflame. In connection with this improvednozzle I contemplate employing a peculiarly-constructed regulating-capby which the volume of gas issuing from the nozzle may be regulated to anicety. I also intend to employ, in connection with a mixing-tube, anouter tube or jacket through which the mixing-tube eX- tends for aconsiderable distance, this correlation ofthe jacket and the mixing-tubeenabling a clear steady light of great power and incandescence to be hadwhen the burner is provided with an ordinary incandescent mantle. Withthe above-recited objects and others 'of a similar nature in View myinvention consists in the construction, combination, and arrangement ofparts, as is described in the specification, delineated in theaccompanying drawings, and set forth in the appended claims. In thedrawings like parts are designated by corresponding characters in allthe figures.

Figure 1 is a sideelevation of a gas-burner Fig. 2 is a vertical centrallongitudinal section thereof. Fig. 3 is a detail view of the gas-nozzlewith provided with amale screw-thread (t the cap removed, and Fig. 4 isa plan view of the nozzle shown by Fig. 3.

. In the accompanying drawingsfor the sake of convenience and a clearunderstanding of my invention I have designated the gas-nozzle as awhole by the letter A, the regulating-cap for the nozzle by B, while thegas and air mixing chamber or tube is indicated at C and the jacket orouter tube is shown at D. I

Referring to the drawings in detail, it will be seen that the nozzle Acomprises a base portion 60, having a threaded socket on, said baseportion having extending circumferentially thereof amilled flange (0while the portion immediately above said milled flange is EX- tendingupwardlyfrom the base portion is the nozzle proper, A, which is of lessdiameter than the base portion and forms-therewith a shoulder a Thenozzle is of tubular form and at its upper end portion terminates inthefrusto-conical part a which is closed except where such frusto-conicalpart is provided with a plurality of gas passages or bores.

Referring particularly to Figs. 3 and 4, it will be seen the inclinedwall of the frustoconical part is formed with a plurality of elongatedvertically-disposed apertures a, communicating with the interior of thenozzle, while the flattened top of the frL1sto-conical part is providedwith a plurality of relatively small openings at, the same also havingcommunication with the interior of the nozzle. The nozzle A is threadedexternally below the frusto-conical part to screw into the threadedwallet of the cap B.

The regulating-cap B is provided at its lower portion with a circularmilled flange I), and

the upper portion of this cap, which is also of tubular conformation, isfrusto-conical in form, as indicated at Z2 the top of said cap beingopen. By this construction and larrangement it will be observed thatwhen the cap is rotated so as to be moved vertically up or down upon thenozzle the frusto-conical wall of thecap will be brought into suchcorrelation with the frusto-conical wall of the nozzle that the flow ofgas through the vertically-arranged elongated apertures (0 will beregulated and controlled-that is to say, the adjustment of the capregulates the area of TOO the ports in the nozzle. It will be noted,however, that in either of the several positions assumed by the cap whenadjusted as described a limited volume of gas is free to pass from thenozzle through the vertical axial passages 66 in the flat top wall ofthe nozzle.

When the burner is in service, a small volume of gas is supplied to themixing-tube by the axial perforations (b of the nozzle; but to increasethe supply of gas it is necessary to adjust the cap B and allow the gasto pass through the side passages cr,as well as through the axialpassages (0 In order to prevent any accidental displacement of the cap Bupon the nozzle, I have provided a tension-spring 0 coiled about thenozzle and interposed between the milled flange Z) and the base of suchnozzle. The tension of the spring on the cap insures apositiveengagement of the threads of the cap with those of the nozzle, therebyobviating a possibility of said cap being accidentally deranged.

The mixing-tube C is enlarged at its lower portion to produce theair-chamber 0, air being admitted to such lower portion through theopenings 0'. The lower enlarged part of the tube is internally threadedto screw upon the male threaded portion a of the nozzlebase, thus makingprovision for mounting the mixing-tube directly upon the base of thenozzle. The lower enlarged portion of the mixingtube envelops the nozzleand the cap, and the milled edge of the cap is exposed through theopenings in the bottom part of the tube, thus enabling access to beobtained easily to the cap for the proper adjustment thereof upon thenozzle. Projecting upward from the enlarged portion 0 is the tubularextension 0 which forms the air and gas mixing chamber proper, the upperend of the tube being open for the unobstructed egress of the mixture ofgas and air. Fitting over the tubular extension 0 of the mixing-tube isthe relatively large jacket or tube D, the lower part of whichis-reduced in diameter, as at (Z, the same having frictional engagementwith the member 0 of the mixing-tube C.

When the jacket D is mounted upon the mixing-tube C in the normalposition, such as indicated by Fig. 2, it will be seen that the tubularmember of the mixing-chamber projects into the jacket for a considerabledistance, in the present instance approximately half the length of saidjacket, this arrangement producing a burner capable of attaining athorough mixing of the elements and insures that the light shall be ofgreat brillianey and candle-power. In addition to this the telescopingor jacketing of the member 0 Within the part D greatly reduces thelength of the entire burner, thereby securing a compact and neatstructure.

Surmounting the jacket D is a gauze cap f of any ordinary and well-knownform.

It should be understood that the improved burner is used in connectionwith an incandescent mantle, (not shown,) the same being suspended overthe gauze cap.

From the above description, taken in connection with the accompanyingdrawings, the operation of my improved burner will be readily apparentand the many advantages incident to the same will be manifest, so thatit is unnecessary to dwell upon the same here in detail.

What I claim as new is 1. As a new article of manufacture, a gasburnerprovided with a gas-nozzle having a frusto-conical upper portion, saidnozzle having in its upper surface a series of gas-pasages, and aplurality of approximately vertical passages arranged circumferentiallyof the side wall of the frusto-conical portion, a cap adjustable on thenozzle, a spring acting against. the cap, a mixing-tube enveloping thecap and nozzle, and a jacket covering the mixing-tube.

2. As a new article of manufacture, a gasburner provided with a nozzlehaving a frustoconical upper portion, said frusto-conical portion havinga plurality of approximately vertical passages, said nozzle also havinga plurality of passages arranged in the flat top surface of thefrusto-conical portion, an adjustable cap for regulating the area of theports formed by the approximately vertical passages, and a mixing-tube.

3. As a new article of manufacture, a gasburner provided withashouldered nozzle having a frusto-conical upper portion containing aplurality of passages, a cap screwed on the nozzle, a spring seated onthe shoulder of the nozzle and acting against the cap, and a mixing-tubeenveloping the cap,nozzle and spring, and cooperating with the nozzle.

4. As a new article of manufacture, a gasburnercomprising a jacket, agas-nozzle having an upper frusto-conical portion provided with a seriesof large passages and a plurality of relatively small passages, amixingtnbe supported by the nozzle and provided with airinlets adjacentto the outlet from said nozzle, said tube projecting for the majorportion of its length into the jacket, and means for regulating thevolume of gas admitted by the nozzle to said tube.

5. A new article of manufacture a gas-burner comprising a gas-nozzlehaving a frusto-conical upper portion, said nozzle being provided with aplurality of relatively small gas-passages in its upper extremity andwith larger approximately vertical passages in its frustoconicalportion, a cap screwed on the nozzle and having a frusto-conical partdisposed in cooperative relation to the corresponding part of thenozzle, and a mixing-tube.

FRANK \V. RATII.

\Vitnesses V EDWARD I-l. LAMBERT, JANsoN Muruns.

